What is it that sometimes makes the MK3 suddenly want to unload and then reload the filament in the middle of a print?
 
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What is it that sometimes makes the MK3 suddenly want to unload and then reload the filament in the middle of a print?  

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dimprov
(@dimprov)
Noble Member
What is it that sometimes makes the MK3 suddenly want to unload and then reload the filament in the middle of a print?

Not sure if it's due to the firmware upgrade, or something else, but it seems to happen on average about once per print lately.

Publié : 07/07/2018 12:13 am
JoanTabb
(@joantabb)
Veteran Member Moderator
Re: What is it that sometimes makes the MK3 suddenly want to unload and then reload the filament in the middle of a prin

Hi David,
is it your filament sensor?
the silly little plug on the bondtech trap door covers the filament sensor cleaning hole.

Prusa provided it so that you can use 'Air Duster' to blow out dust...

perhaps its time to clear it now...

alternatively, the sensor may be faulty.
and false sensing filament out...

Mine does this with shiny and translucent filament types.

I believe the latest sensor variant is the .e variant

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Publié : 07/07/2018 12:28 am
dimprov
(@dimprov)
Noble Member
Topic starter answered:
Re: What is it that sometimes makes the MK3 suddenly want to unload and then reload the filament in the middle of a prin


Mine does this with shiny and translucent filament types.

I bet that's it. I'm printing with a clear PETG.

Does disabling the filament sensor stop this error from happening?

Publié : 07/07/2018 12:33 am
JoanTabb
(@joantabb)
Veteran Member Moderator
Re: What is it that sometimes makes the MK3 suddenly want to unload and then reload the filament in the middle of a prin

Yes!

Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Publié : 07/07/2018 1:06 am
Martin Wolfe
(@martin-wolfe)
Reputable Member
Re: What is it that sometimes makes the MK3 suddenly want to unload and then reload the filament in the middle of a prin

With translucent and clear filaments the sensor has to be disabled. With shiny black filaments some times you can get lucky but it is best to disable for those as well.

Regards,
Martin

Martin Wolfe

Publié : 07/07/2018 4:24 am
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